YEAR, THE
Project Gutenberg EPUB3 edition
Bulfinch, Thomas
YGDRASIL, great ash-tree, supposed by Norse mythology to support the universe
YMIR, giant, slain by Odin
YNYWL, Earl, host of Geraint, father of Enid
YORK, Britain
YSERONE, niece of Arthur, mother of Caradoc
YSPA DA DEN PEN'KAWR, father of Olwen